Heat Insulating Material
Development of Formulation and Pilot Technology for Production of Noncombustible Heat Insulating Material
Tech Area / Field
- MAT-SYN/Materials Synthesis and Processing/Materials
8 Project completed
Senior Project Manager
Novozhilov V V
VNIIEF, Russia, N. Novgorod reg., Sarov
- Lawrence Livermore National Laboratory, USA, CA, Livermore
Project summaryThe problem of the development of heat insulating, noncombustible, environmentally conscious material arised in the connection with the fact, that up to the last time the materials, containing fiber fillers,-had been used in different fields of industry, including gas-petroleum industry. Particularly, these materials were used at the gas-pumping high-temperature plants of the Volzhk Russia Region, for example, at the Torbeevskaya, Pochinkovskaya compressor stations of the Industrial Association "Volgotransgas", at the stations of the Industrial Association "lugtransgas" and so on.
Materials, such as, for example, those on the base of sodium tripolyphosphate and chrysotile asbestos, and also on the base of glass fiber,-are used for the insulating of compressor station plants. Though these materials ensure heat insulation (the temperature on the external surface of gas waste does not exceed 70°C), the production and use of such materials is prohibited in our time due to its adverse effect on the human organizjn (asbestos is a noxious material).
That is why the works on the development of a material for heat insulation of gas-pumping station plants-have been started in the RFNC-VNIIEF.
In our opinion, the developed material does not contain ecologically harmful, toxical components (no asbestos, no glass or other fibers). It may become an alternative to the materials previously used at the Gasprom enterprises. The use of such a material may give a substantial gain in price (-3 times). Moreover, it is supposed, that the cost of 1kg of the developed material will be from 0.3 to 0.5 $ in its commercial production.
These figures may be considered rather real, because the cost estimation of the developed material in its mass output was performed on the area for production of building materials and structures in Sarov, Nizhegorod Region.
The civil and industrial building is another possible field for the use of the new material. Here it may be used as a refractory insulation in fireproofing lifts.
In our time the mullitosilica insulating material at a cost of 1 $ per 1kg is placed (stuck) in structures of the mentioned lifts between the metal wings.
The substitution of this material with a new developed one, which, besides its heat insulating, fireproofing, environmentally conscious properties, has also structural strength characteristics,-will allow to simplify the lift assembly technology. Moreover, the attaching operation for insulating material, and also the used bonding compositions-are eliminated. Besides, the developed material will be cheaper ~ 2 times.
In this connection, the Russian-American firm "Sherbinka Otis Lift" showed the interest in this work and we got into cantact with it.
The enterprises of Russia "Steelconstruction" and "Teplosol" (the town of Vyksa, Nizhegorod Region) showed the interest because of the possibility of the material use as facing for walls and ceiling.
During the period passed from the time of the Project submission to the ISTC a number of experimental works, confirming the possibility for the development of such a material,-was performed in the laboratory conditions in the Technological Department of RFNC-VNIIEF. The formulation on the base of sodium silicate and microspheres, being the waste of smoke emissions of thermal electric stations, was tested. Moreover, it was determined, that the material production technology is rather simple and does not require for a complex standard equipment: components are mixed with each other and the produced composition is moulded in the form of plates, blocks and other products of necessary forms and dimensions at the temperature up to 300°C. In the finished form it is a solid, light m weight, low-dense material, well amendable to mechanical process.
The preliminary investigations of its strength, thermal physical, sanitary-chemical properties and conbustability tests were performed on the produced material samples.